iOptron -PR EQ User manual

Brand: iOptron

Model: -PR EQ

Category: Telescopes

Type: User manual

This manual is also suitable for

SmartStar -PR EQ

iOptron SmartStar -PR EQ is a user-friendly equatorial mount designed for astrophotography. It features a sturdy stainless steel tripod, a German equatorial mount, and a counterweight system to ensure stability and accuracy. The mount's polar axis can be adjusted in altitude and azimuth for precise polar alignment, enabling accurate tracking of celestial objects. With its intuitive design and ease of use, the SmartStar -PR EQ is suitable for both beginners and experienced astrophotographers.

SmartStar

-PR EQ Mount

Manual

www. iOptron. com

WARNING!

NEVER USE A TELESCOPE TO LOOK AT THE SUN!

Looking at or near the Sun will cause instant and irreversible

damage to your eye.

Children should always have adult supervision while observing.

 SmartStar

-PR Layout (OTA not included)

Tripod

 Set up the Tripod

The SmartStar

-PR comes with a two-inch stainless steel tripod.

The tripod comes fully assembled with a metal plate called the Tripod Head, which holds

the legs together at the top. In addition, there is a central rod that extends down from the

Tripod Head, which attaches the equatorial mount to the tripod. To set up the tripod:

1. Stand the tripod upright and pull the tripod legs apart until each leg is fully

extended. After the tripod is set up you may adjust the height.

2. Loosen the Levers on the Leg Clamps so that the tripod legs can be adjusted.

3. Slide the lower part of the tripod legs out until it is at the height you want.

4. Tighten the Lever on each Leg Clamp to hold the legs in place securely.

 Attach the Equatorial Mount and Accessory Tray

The SmartStar

-PR mount is a German equatorial mount that attaches to the Tripod

Head. On one side of the tripod head there is a metal Alignment Peg for aligning the

mount. This side of the tripod should face north when set up for an astronomical

observation. To attach the Equatorial Mount Head:

1. Locate the Azimuth Adjustment Screws on the Equatorial Mount Head.

2. Retract the screws so they no longer extend into the azimuth housing on the

mount. Please do not remove the screws, they are needed later for polar

alignment.

3. Hold the Equatorial Mount Head over the Tripod Head so that the azimuth

housing is above the metal Peg.

4. Place the equatorial mount on the Tripod Head so that the two are flush.

5. Tighten the knob (attached to the Central Rod) on the underside of the Tripod

Head to hold the Equatorial Mount Head firmly in place.

6. Slide the Accessory Tray so that the tray is pushing against the inside of the tripod

legs and the Central Rod goes through the tray.

7. Thread the Accessory Tray Knob on to the Central Rod and tighten.

EQ Mount Head

Since the fully assembled telescope can be quite heavy, position the

mount so that the polar axis is pointing towards north before the OTA

and counterweight are attached. This will make the polar alignment

procedure easier.

 Install the Counterweight

The telescope needs to be balanced by the Counterweight to reduce the stress on the gears

and motors. To install the Counterweight bar:

1. Thread the Counterweight Bar Lock Nut onto the threaded end of the

Counterweight Bar.

2. Locate the opening in the Equatorial Mount Head on the DEC axis.

3. Thread the Counterweight Bar into the opening until it is tight.

4. Tighten the Counterweight Bar Lock Nut for extra support.

5. Once the bar is securely in place you are ready to attach the Counterweight.

6. Position the mount so that the Counterweight Bar points toward the ground.

7. Remove the Counterweight Safety Screw on the end of the Counterweight Bar

(the opposite the end that attaches to the mount).

8. Loosen the Locking Screw on the side of the counterweight.

9. Slide the Counterweight onto the shaft.

10. Tighten the Locking Screw on the side of the Counterweight to hold the

Counterweight in appropriate place.

11. Put back the Counterweight Safety Screw.

 Attach an OTA to the Mount

The optical tube attaches to the mount via a 1.75” Dovetail Plate. The Dovetail Plate

mounts along the bottom of a telescope tube. To avoid any damage to the OTA and the

mount, before you attach an optical tube, make sure that the declination and right

ascension clutch knobs are tight. To mount the telescope tube:

1. Loosen the Dovetail Locks on the side of the Telescope-Mounting Platform. This

allows you to slide the Dovetail Plate onto the mount.

2. Slide the Dovetail Plate on the telescope tube into the Mounting Platform of the

mount.

3. Tighten the Dovetail Locks on the side of the mounting platform to hold the telescope

in place. Tighten the big lock first, then the smaller one.

 Balance in R.A.

To reduce the excessive stress on the mount and motor, the telescope should be properly

balanced around both R.A. and DEC axes. Proper balancing is crucial to both accurate

tracking and protection of the mount. Both the R.A. and DEC axis have lock levers to

clutch down each axis of the telescope. To loosen the clutches on the telescope, rotate the

lock levers counterclockwise.

1. Verify that the telescope is securely attached to the Telescope-Mounting Platform.

2. Loosen the R.A. Lock Lever and position the telescope off to one side of the mount.

The Counterweight Bar will extend horizontally on the opposite side of the mount.

3. Release the telescope slowly to see which way the telescope “rolls.”

4. Loosen the Locking Screw on the side of the counterweight so it can be moved the

length of the Counterweight Bar.

5. Move the Counterweight to a position where it balances the telescope (i.e., the

telescope does not move when the R.A. clutch knobs are loose).

6. Tighten the Screw on the Counterweight to hold it in place.

The above instructions describe a perfect balancing. In fact, there should be slight

imbalance to ensure the best tracking. When the scope is on the west side of the mount

the counterweight should be slightly imbalanced to the counterweight bar side. And when

the tube is on the east side of the mount there should be a slight imbalance toward the

telescope side. This is done so that the worm gear is pushing against a slight load. The

amount of the imbalance is very small. When doing astrophotography, this balance

process should be done for the target area where the telescope is pointing to increase

tracking accuracy.

 Balance in DEC

Even though the mount does not track in DEC, the telescope should still be balanced in

DEC to prevent any sudden motions when the DEC lock lever is loose. To balance the

telescope in DEC:

1. Loosen the R.A. Lock Lever and rotate the telescope so that it is on one side of the

mount (please refer to “Balancing the Mount in R.A.”).

2. Tighten the R.A. Lock Lever to hold the telescope in place.

3. Loosen the DEC Lock Lever and rotate the telescope until the tube is parallel to

the ground.

4. Release the tube slowly to see which way it rotates around the declination axis.

5. Slightly loosen the knobs that hold the telescope to the Mounting Platform and

slide the telescope either forward or backward until it remains stationary when the

DEC clutch is loose. Do NOT let go the telescope tube while the knob on the

Mounting Platform is loose. It may be necessary to rotate the telescope so that the

Counterweight Bar is pointing down before loosening the mounting platform

screw.

6. Tighten the knobs on the Telescope-Mounting Platform to hold the telescope in

place.

Just like R.A. balancing, these are general balance instructions and will reduce excessive

stress on the mount. When doing astrophotography, this balance process should be done

for the target area where the telescope is pointing to.

 Adjust the Mount

To track celestial objects accurately, the telescope’s axis of rotation must be parallel to

the Earth’s axis of rotation. This is called the polar alignment. The polar alignment is not

achieved by moving the telescope in either R.A. or DEC. This is done by adjusting the

telescope horizontally (azimuth) and vertically (altitude). More details of polar alignment

is described later.

Adjust the Mount in Altitude

 To increase the latitude of the polar axis, tighten the Rear Latitude Adjustment Screw

and loosen the Front Screw (if necessary).

 To decrease the latitude of the polar axis, tighten the Front (under the Counterweight

Bar) Latitude Adjustment Screw and loosen the rear screw (if necessary).

The latitude adjustment on the SmartStar

-PR mount has a range from approximately 30°

to 60°.

You should always make final adjustments in altitude by moving the mount against

gravity (i.e. using the Rear Latitude Adjustment Screw to raise the mount). To do this you

should loosen both Latitude Adjustment Screws and manually push the front of the mount

down as far as it goes. Then tighten the Rear Adjustment Screw to raise the mount to the

desired latitude.

For Advanced users, it may be helpful to remove the Front Latitude Adjustment Screw

completely. This will allow the mount to reach lower latitudes without the screw coming

into contact with the R.A. motor assembly. To remove the latitude screw, first use the

rear screw to raise the mount head all the way up. Then remove the Front Latitude Screw

completely. Now you should be able to manually move the Mount Head all the way to its

lowest latitude. Now raise the mount to your desired latitude using only the rear screw.

Adjust the Mount in Azimuth

For rough adjustments in azimuth, simply pick up the telescope and tripod and move it.

For fine adjustments in azimuth:

 Turn the Azimuth Adjustment Knobs located on both sides of the azimuth housing.

While standing behind the telescope, the knobs are in the front of the mount.

o Turning the Right Adjustment Knob clockwise moves the mount toward the

right.

o Turning the Left Adjustment Knob clockwise moves the mount to the left.

Both screws push the Peg on the Tripod Head. This means you have to loosen one screw

when tightening the other. The screw that holds the equatorial mount to the tripod may

have to be loosened slightly too.

Keep in mind that adjusting the mount is done during the polar alignment process only.

Once polar aligned, the mount should NOT be moved. Pointing the telescope to a target

is done by moving the mount in right ascension and declination as described earlier in

this manual.

 Attach the Coiled Cables

There are two Port B’s which are equivalent.

There are three Port A’s which are equivalent to

each other, too.

Use one of the coiled cables to connect one Port A

and one Port B. Plug the cable from the 8401

controller to one of the Port A’s. Extra ports are

reserved for other future accessories.

Now plug in the AC adapter, or DC adapter, and

turn on the power.

If you R.A. and DEC motors are not installed on

the mount, please refer to the installation

instructions here:

http://www.ioptron.com/manuals/GoToNovaKit-

Manual.pdf

 The GOTONOVA

8401 Controller Layout:

The 8401 GoToNova

hand held controller is the standard controller for SmartStar

-PR.

The user interface is simple and easy to learn.

LCD Display: 8-line big screen, it displays all the information

Back Key: Move back to the previous screen.

Menu Key: Return to the Main Menu.

Enter Key: Confirms an input, goes to the next menu, selects a choice, slews the

telescope to a selected object.

Arrow Keys: Moves the cursor, moves the telescope in a specific direction.

Number Keys: Adjusts numerical values.

Speed Key: Adjusts the speed.

Light Key: Turns on/off the red LED reading light on the back of the controller.

Help Key: For help.

 The LCD Display:

GPS Status

Slew Speed

Tracking Speed

Local Date and Time

N/S Hemisphere

zimuth

ltitude

Declination

Right Ascension

Tar

et Declination

Target Right Ascension

Local Star Hour

GPS status: When the power is turned on, it shows “GPS ON”. When it finds the satellite

and receives GPS signal, it shows “GPS OK”.

Slew speed: It has 9 speeds: 1X, 2X, 8X, 16X, 64X, 128X, 256X, 512X, MAX

Tracking speed: It has 4 speeds: Cel(celestial), Sol(Solar), Lun(Lunar), Def(user defined)

 SmartStar

-PR Basic Setups and Functions

1. Set Up Time Zone (Main Menu/Set up Controller/Set up Site)

Turn on the power, push MENU, from the main menu, scroll down and select “Set

up controller”

Push ENTER. Scroll down and select “Set up site”

Push ENTER. Push left arrow button, move the cursor to the bottom of the screen

to set the time zone information.

All the time zones in North America are behind UT (universal time), so make sure

it shows “behind” instead of “ahead of” UT. When the cursor is in that position,

use up or down arrow to toggle between “behind” and “ahead of”. Then use the

left button to move the cursor to the number of minutes behind UT. This number

is calculated by multiplying the regular time offset (in hours) to 60. For other

parts of the world, you can find out your “time zone” information here:

http://www.timeanddate.com/worldclock/

DO NOT COUNT DAYLIGHT SAVING TIME. Use the standard time offset.

For example, the time offset of Eastern Time Zone is UTC-5 during standard

time, so the number of minutes is 5x60=300 Min. behind UT. Even during

daylight saving time in the summer, your time zone is still “300 Min. behind UT”,

NOT “240 Min. behind UT”.

In this step “time zone” is not related to time. It is related to degrees away from

UT. The internal computer adjusts star locations based on where you are in

relation to UT—not when you are.

To adjust minutes behind or ahead of UT, move the cursor to each digit and use

the number keys to input number directly.

Select and slew

Sync. to target

Electronic focuser

Set up controller

Align

PEC option

Set up Tracking

User objects

Set up Local Time

Set up site

Set N/S hemisphere

Set display contrast

Set Eyepiece light

Set Backlash

Set anti-backlash

Set Key Beep

When the number is correct, push ENTER and go back to the previous screen. Do

not worry about longitude and latitude numbers; they will be set by internal GPS.

Set up site info:

Longitude:

W071d27m47s

Latitude:

N42d15m40s

300 Min. behind of UT

2. Set Up Daylight Saving Time (Main Menu/Set up Controller/Set up Local Time)

Scroll up and select “Set up local Time”

Use the left arrow to move the cursor to the bottom of the screen, use the up or

down button to toggle between √ and X. √ means “yes, now it is daylight saving

time”. X means “no, now it is regular time”.

Push ENTER to go back the previous screen. Do not worry about the date and

time right now; they will be set by the internal GPS.

Set up Local Time

Set up site

Set N/S hemisphere

Set display contrast

Set Eyepiece light

Set Backlash

Set anti-backlash

Set Key Beep

Set local time:

2008-06-01 11:55:09

Daylight Saving Time √

3. Set mount type (Main Menu/Set up Controller/Set Mount Type)

Scroll down and select “Set Mount Type”

SmartStar

-PR is an EQ mount, so select Equatorial mount and push ENTER.

Set up site

Set N/S hemisphere

Set display contrast

Set Eyepiece light

Set Backlash

Set anti-backlash

Set Key Beep

Set Mount Type

Equatorial Mount

Alt/Azi Mount

4. Time, location and GPS

Push BACK twice and go back to the starting screen. Turn off the power. Wait a

few seconds and turn the power back on. You will see “GPS ON” in the upper-

right corner of the screen. After about a minute, when it finds the satellite and

receives GPS signal, you will see “GPS OK”. Local time, longitude and latitude

will then be set automatically. Double check date and time make sure they are

correct. If they are not, then re-do steps 1 through 3. Make sure you see “EQ” in

the lower right corner indicating “Equatorial”. If it shows “A/A” then you need to

reset the mount type in step 3.

5. Tighten all the screws and locks. Double check the bubble and south mark. Now

you are ready to use the SmartStar

-PR.

6. Align (Main Menu/Align)

The system provides “one-star align”, “two-star align” and “three-star align”

From the main menu, select “Align”. Select “one-star align”. Use “UP” and

“DOWN” arrow buttons to select a star and press ENTER. A list of the align stars

is computed based on your local time and location. Use arrow buttons to move the

telescope and center the star in your eyepiece. You can use SPEED button to

change speed.

Press ENTER when finished. If your setups to now are quite accurate, “one-star

align” should be sufficient. To increase the accuracy you may choose to do two-

star or three-star align.

“Two-Star Align” will increase the accuracy of alignment, but it requires a wider

view of the sky, since the two align stars need to be far apart. Select “Two-star

align” in the Align menu. When you finish the first star, the system will prompt

you to choose the second star. If the star you choose is too close to the first one,

the system will let you choose another one. When you aligned with the second

star, two-star align is finished.

“Three-Star Align” will increase the accuracy even higher and requires an even

wider view of the sky. This basically asks you to choose yet another third star to

align after two-star align.

7. Select and Slew (Main Menu/Select and Slew)

Now you can select any object in the database, and SmartStar

-PR will get you

there (if it is above the horizon). For more details, check the section on

“SmartStar

-PR Select and Slew”

8. The Database Contents

The numbers of the objects in the database are listed below:

Solar system: 10

Deep sky objects:

Named Deep sky Objects: 76

Messier Catalog: 110

NGC IC Catalog: 5386

UGC Catalog: 12939

MCG Catalog: 29004

Caldwell Catalog: 109

Abell Catalog: 2712

Herschel Catalog: 400

Comets: 190

Asteroids: 4096

Stars:

Named Stars: 191

Double Stars: 40

GCVS Variable Stars: 38624

SAO Catalog: 26584

Constellations: 88

User Objects: 256

9. Firmware Upgrade

Firmware in the controller can be upgraded from you PC. New firmware versions

are released to fix bugs and add new functions. For latest firmware release and

instructions, please check:

http://www.ioptron.com/support.aspx?catalog=28

 Find Polaris

Polaris is less than one degree from the celestial pole. Finding Polaris helps you locate

the celestial pole. Although this is not a perfect alignment, it does get you quite close to

the pole.

1. Set the telescope up so that the polar axis is pointing north.

2. Loosen the DEC Lock Lever and move the telescope so that the tube is parallel to the

polar axis. When this is done the declination setting circle should read +90°. If the

declination-setting circle is not aligned then move the telescope so that the tube is

parallel to the polar axis.

3. Adjust the mount in altitude and azimuth until Polaris is in the field of view of the

Finder Scope.

4. Center Polaris in the field of the Eyepiece using the fine adjustment controls on the

mount.

Please remember: during polar alignment, do not move the telescope in R.A. or

DEC. You should not move the telescope itself, but only the polar axis. The telescope

is used to see where the polar axis is pointing.

This gets you close to the pole but not directly on it. The following two methods help

improve your accuracy for more serious observations and photography.

 Find the N.C.P.

N.C.P. stands for North Celestial Pole. In each hemisphere, there is a point in the sky

around which all the other stars appear to rotate; those points are called the celestial

poles. When the telescope’s

polar axis is aligned with

celestial pole, it is parallel to

the earth’s rotational axis.

Polar alignment usually

requires that you know the

stars in the polar area. In the

northern hemisphere, Polaris

is only one degree away from

the celestial pole. Polaris is

visible by the naked eye

during clear nights.

 DEC Drift Method

Declination (DEC) drift method is a standard method for polar alignment. You can find a

lot of references on the Internet by googling the term. This method might seem simple

and straightforward at first look, but it is actually very time consuming if you don’t have

a lot of experience with it. You are strongly suggested to do a lot of homework before

trying it out. It is also suggested that you work with people who have had a lot of

experience -- at least for the first couple of nights.

With DEC Drift Method, you monitor the drift of each star which tells you how far away

you are from the celestial pole.

To perform a DEC drift, you should first perform the steps previously mentioned (Find

Polaris and Find NCP).

You need to pick two bright stars to do the DEC drift. One should be close to the eastern

horizon and the other due south near the meridian. Both stars should be near the celestial

equator (i.e., 0° declination). Monitor the drift of each star one at a time and in DEC only.

While monitoring the star on the meridian, any misalignment in the east-west direction is

revealed. While monitoring a star near the east/west horizon, any misalignment in the

north-south direction is revealed. It is helpful to have an illuminated eyepiece to help you

recognize any drift. To fine tune the alignment, a Barlow lens is recommended since it

increases the magnification and reveals any drift faster. When looking due south, insert

the diagonal so the eyepiece points straight up. Insert the cross hair eyepiece and align the

cross hairs so that one is parallel to the declination axis and the other is parallel to the

right ascension axis. Move your telescope manually in R.A. and DEC to check

parallelism.

Choose your star near where the celestial equator and the meridian meet. The star should

be approximately within half an hour of the meridian and within five degrees of the

celestial equator. Center the star in the field of your telescope and monitor the drift in

declination.

 If the star drifts south, the polar axis is too far east.

 If the star drifts north, the polar axis is too far west.

Make the appropriate adjustments to the polar axis to eliminate any drift. Once you have

eliminated all of the drift, move to the star near the eastern horizon. The star should be 20

degrees above the horizon and within five degrees of the celestial equator.

 If the star drifts south, the polar axis is too low.

 If the star drifts north, the polar axis is too high.

The two stars in the front of the bowl of the Big Dipper point to Polaris, which is less

than one degree from the true (north) celestial pole. Cassiopeia, the “W” shaped

constellation, is on the opposite side of the pole from the Big Dipper. The North

Celestial Pole (N.C.P.) is marked by the “+” sign.

Again, make the appropriate adjustments to the polar axis to eliminate any drift.

Unfortunately, the latter adjustments interact with the prior adjustments ever so slightly.

So, repeat the process again to improve the accuracy checking both axes for minimal

drift. Once the drift has been eliminated, the telescope is very accurately aligned. You

can now do prime focus deep-sky astrophotography for long periods.

SmartStar

-PR Select And Slew

After you have finished the set up and align steps in chapter 1 go to the main menu.

Select “Select and slew.” Now you can select any celestial objects in the database and

GoToNova

will take you there—whether it is a star, a planet, an asteroid, a comet or a

galaxy.

Check astronomy books and magazines such as “Sky and Telescope.” Familiarize

yourself with the names in the night sky. Use the arrow buttons to move your cursor and

press ENTER to select an object.

For a star check list, please go to: http://www.ioptron.com/manuals/starlist.pdf

 Planets, sun, moon

This menu includes the Sun, the Moon, Mercury, Venus, Mars, Jupiter, Saturn, Uranus,

and Neptune.

WARNING: NEVER LOOK DIRECTLY AT THE SUN WITH THE NAKED EYE

OR WITH A TELESCOPE (UNLESS YOU HAVE THE PROPER SOLAR

FILTER). PERMANENT AND IRREVERSIBLE EYE DAMAGE MAY RESULT.

 Deep Sky Objects

This menu includes objects outside our Solar system such as galaxies, star clusters,

quasars, nebulae, etc.

 Named Deep Sky Objects

This menu contains 60 named deep sky objects. If you know the names of the objects you

can use this menu.

 Messier Catalogue

Contains 110 objects from the Messier catalogue.

 NGC-IC Catalogue

Contains 7840 objects from the NGC-IC catalogue.

 UGC Catalogue

Contains 12,939 objects from the UGC catalogue.

 MCG Catalogue

Contains 29,004 objects from the MCG catalogue.

 Caldwell Catalogue

Contains 109 objects from the CaldWell catalogue.

 Abel Catalogue

Contains 2712 objects from the Abel catalogue.

 Herschel Catalogue

Contains 400 objects in Herschel catalogue.

 Comets

Contains up to 256 comets.

 Asteroids

Contains up to 4096 asteroids.

 Stars

 Named Stars

Contains 191 stars.

 Constellations

Contains 88 constellations.

 Double Stars

Contains 40 double stars.

 Variable Stars

Contains 38,624 variable stars.

 SAO Bright Stars

Contains up to 26,584 SAO bright stars.

 Constellations

Contains 88 constellations.

 User Objects

User defined objects. User can define up to 128 objects

 Enter R.A. DEC.

In Equatorial mode the user can target a location by specifying its RA (Right Ascension)

and DEC (Declination). Use the arrow buttons to move the cursor and adjust the values.

Press ENTER.

Other SmartStar

PR Functions

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iOptron -PR EQ User manual

Brand: iOptron

Model: -PR EQ

Category: Telescopes

Type: User manual

This manual is also suitable for

SmartStar -PR EQ

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iOptron -PR EQ User manual

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